> The 16" still lists 100Wh

For those not aware, the 100Wh limitation is not Apple, but imposed on them by the airline industry (IATA)[1]

Anything over >100Wh && <160Wh requires airline approval at individual passenger level. Anything >160Wh is classified as dangerous goods and must be prepared and packaged correctly and put in the hold.

[1] https://www.iata.org/contentassets/6fea26dd84d24b26a7a1fd578...

You're correct, I misclicked on the specs page. Thanks.